Photoassociative Spectroscopy and Formation of Cold Molecules
Anno: 2000
Autori: Pillet P., Drag C., Tolra B.L., Comparat D., Fioretti A., Guibal S., Amiot C., Crubellier A., Dulieu O., Masnou-Seeuws F.
Affiliazione autori: Laboratoire Aimé Cotton, CNRS II, Bât. 505, 91405 Orsay, France
Abstract: In the molecular photoassociation process, two free cold atoms absorb one photon by a resonant way, to create an excited molecule in a well defined ro-vibrational state. The photoassociative spectroscopy of alkaline dimers yields accurate determinations for the long-range parts of molecular potential curves correlated to the first s + p asymptote. In contrast to atoms, laser cooling of molecules is very difficult because of the lack of a closed two-level scheme for recycling the population. The molecular photoassociation of cold atoms opens also a promising alternative for the formation of cold ground state molecules. Photoassociation of cold cesium atoms has permitted the first observation of translationally cold ground state molecules. The case of the cesium atom is very favorable because the 0-g and 1u purely long-range states below the dissociation limit 6s1/2 + 6p3/2 present Condon points at intermediate distances. Such configurations offer rather efficient channels for the creation of singlet or triplet ground state Cs2 molecules after spontaneous decay.
Giornale/Rivista: PHYSICA SCRIPTA
Volume: T86 Da Pagina: 38 A: 45
Maggiori informazioni: Conference: 31st EGAS Conference of the European Group for Atomic Spectroscopy
Location: UNIV PROVENCE, MARSEILLE, FRANCE – Date: JUL 06-09, 1999 Parole chiavi: ALKALI-METAL DIMER; MAGNETOOPTICAL TRAP; SCATTERING LENGTHS; CS-2 MOLECULES; CESIUM; COLLISIONSDOI: 10.1238/Physica.Topical.086a00038Citazioni: 1dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-05Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui